Ore-feeder.



T. M. TOPP.

ORE FEEDER.

APPLICATION FILED NOV. 5,1907.

910,097. Patented Jan. 19, 1909.

In: NORRIS Pen es cu. wAsHmcroN, u, c

THOMAS M. TOPP, OF SAN FRANCISCO, CALIFORNIA.

ORE-FEEDER.

Specification of Letters Patent.

Patented Jan. 19, 1909.

Application filed. November 5, 1907. Serial No. 400,738.

To all whom it may concern:

Be it known that I, THOMAS M. Torr, a citizen of the United States,residing at the city and county-of San Francisco and State ofCalifornia, have invented new and useful Improvements in Ore-Feeders, ofwhich the following is a specification.

My invention relates to a device for feeding material intermittently insmall quantities. It is especially designed for feeding ore from areceptacle or container, and delivering it to a crushing mill ofsuitable character.

It consists in the combination of parts, and in details of constructionwhich will be more fully explained by reference to the accompanyingdrawings, in which- Figure 1 is a side elevation showing my ore feederattached to a crushing mill. Fig. 2 is a section on line XX of Fig. 1.

It is the object of my invention to provide a device for feeding ore tocrushing mechanisms, and a means by which the feed is regulated to therequirements of the mill.

This device may be applied to any form of crushing mill. In Fig. 1, Ihave shown it as applied to that class of crushing mills in which aquadrant-shaped crusher is caused to oscillate or rock back and forthupon the surface between which and the crusher the ore is to be crushed.

A is a hopper or container of any description in which the ore is placedready for feeding.

The feeder consists of a flat conical disk or surface 2 which preferablyhas projections upon itssurface, as shown at 3. This disk is mountedupon a vertical stud 4:, and is located beneath the opening at thebottom of the ore container.

The container in the present case is shown as being convergent downward,or hoppershaped, and the mouth or opening is of sufficient proportionatesize to allow the ore to pass down and rest upon the disk 2. This diskand its stud are so mounted that they may be raised or depressed. In thepresent case the stud 4 has its lower end screwthreaded, and may have arectangular end, as at 4* for the reception of a wrench by which thestud may be turned through the nut 6 so as to raise or depress the disk,dependent upon the fineness or coarseness of the ore to be fed, and therapidity with which feed is required.

7 is an arm which is attached to the hub of the disk 2, this hub beingbored to fit and turn on the upped end of the stud at. This arm 7extends outwardly to one side and has a vertically slotted portion 7through the slot of which a rod 8 passes, and across the frame-work 9which supports the container A. This slot being slidable upon the rod,will allow the cone 2 and the arm 7 to be moved up and down in unisonwith the movement of the screw at to regulate the feed. I have hereshown a portion of the transverse frame 10 upturned and bent over toform a hook as shown at 10, and this hook may be engaged with the sideof the mortar in which the crushing takes place. The outer side of thefeeder is here shown as provided with a leg 12 which may rest upon thefloor by the side of the mortar, thus furnishing a convenient support,and retaining the feeder in close connection with the crushing mortar.

The disk 2 is caused to oscillate from side to side, and as the orerests upon the surface of the disk, it will be seen that the constantoscillating movement will agitate the ore and cause it to gradually workoff the edges of the disk, and thus fall into a chute 13 which isarranged beneath the disk, with the lower end discharging into themortar and beneath the crushing shoes of the apparatus. In order toproduce this oscillating motion, I have shown suitably stiff springs 17,which are located upon the rod 8 and on each side of the slotted arm 7their outer ends abutting against a portion of the framework as at 18.The end of the arm 7 extends sufficiently beyond the rod 8, or anequivalent extension is formed as at 14, and this is in line with amoving part of the crusher so that the latter will contact with it ateach reciprocation or movement of the crusher. In the present case Ihave shown an arm 20 extending downward from the pin or shaft whichoscillates the rocking crusher, and this arm engages the end of the arm14 as it passes, thus pulling the arm 14: to one side until in its arcof movement it passes out of range of the arm 20, when the springs willact to return the arm 14, and with it the disk 2 to its normal position.WVhen the oscillating crusher returns in the opposite direction, thesame engagement will act to rotate the disk in the opposite directionuntil the end 14 is again released, when the spring 17 will again returnit to its normalposition.

Thus the oscillations of the crusher continually oscillate the disk withan abrupt motion which acts to gradually shake the ore down and off theedge of the disk and into the crushing mortar. As the ore in the mortaincreases, it will be obvious that the crusher will also be raised andthe length of the arm 20 is so regulated that when a sufficient amountof ore for best results has been fed into the mortar, this arm willcease to engage with the arm 14, and the feed will be temporarilystopped until the ore already within the mortar has been snfficientlycrushed to allow the crushing device to again be lowered until theactuating arms engage when the feed will recommence.

The feed is thus rendered automatic and the amount fed is regulated bythe stud 41;, as previously described.

If this apparatus is designed to be used upon a rising and falling stampmill, it will only be necessary to fix a wedge-shaped inclined part tothe stamp stem, or some rising and falling portion of the mill, andlocate the arm 14 in such position that the wedge will engage upon oneside of the arm and thus oscillate the feeder. In this case the shape ofthe wedge will insure the cessation of the feed when the amount of orebelow the stamp becomes sufficient to prevent its falling far enough toengage the arm. It will be manifest that in a similar manner this feedmay be adjusted to any character of crushing mill.

It will be observed that the slot in the enlarged portion 7 is so muchlarger thanthe rod 8 that the arm 7 can oscillate without binding onsame. 7

Having thus described my invention,what I claim as new and desire tosecure by Letters Patent is 1. An ore feeder consisting of ahorizontally disposed conical disk, a vertical stud therefor, an orecontainer having an open mouth beneath which the disk is placed, andmeans whereby the disk is oscillated in a horizontal plane, said meansincluding an arm horizontally-disposed having one end at tached to thedisk and having its other or outer end arranged in the range of actionof a contacting part of the crusher, and 'resilient connectionsoperating against each side of the arm.

2. In an ore feeder and in combination with an open bottomed orecontainer, a disk having a conical upper surface with protuberancesthereon, a vertical stud upon which the disk is mounted in line beneaththe container mouth, and means by which the disk is oscillated in unisonwith the operation of the crusher, said last named means comprising ahorizontally-disposed arm having its inner end connected to said studand having its outer end arranged in the field of reciprocal 1 action ofa part carried by the crusher, owhereby said arm may be moved in ahorizontal plane substantially at right-angles to the axis of the stud,and springs upon each side of the arm acting in opposition to thepressure exerted by the contacting part of the crusher. r

3. In an ore feeding device, and in com bination with an open bottomedore container, a conical disk having protuberances upon its uppersurface, a vertic'abstud upon; which the disk is mounted, meanssby whichthe disk and stud may be raised and depressed with relation to thecontainer, and means by which an oscillatingmotionis conveyed to thedisk, said last-named means comprising an arm having one portionattached to the disk and having anotherportion arranged in the field ofreciprocal ac tion of a part carried by the crusher, the intermediatepart of the arm being springpressed whereby the arm will yield inlateral planes when engaged by the contacting part of the crusher. 7

4. In an orc feeder of the character de-' scribed, an open-bottomed=ore-containe-r, a low conical disk having protuberances upon its uppersurface, a vertical stud upon which the disk is mounted, an armextending at right angles with the stud, said arm having its inner endattached to the disk andahaving its outer portion provided with avertical slot, and a fixed rod upon which-said arm is slidable, screwthreads formed upon the lower end of the stud, a fixed nut through whichsaid threads-are turnabl'e whereby :the disk may be raised or depressedwith relation to the container, means for operating said arm, and achute through which orezdischarged from its periphery is conducted to acrushing mechanism. 7 r

5. In an apparatus ofthe character :described, an open-bottomedore-container, a disk having protuberances upon its upper surface, avertical stud upon ,whichsaid'disk is carried, an arm projecting to oneside from the disk, springs by which said arm and the disk are normallymaintained in position, an arm projecting from a movable part of thecrusher adapted to engage the projecting end of the disk-connected armto move said arm and disk until-released from the actuatingarm, thesprings :retu-rning the disk and its arm to their normal position whenreleased. V

6. In an apparatus ofthe character described, an open-bottomed*ore-container,;:a

horizontallytturnable' disk mounted below the mouth of the container,means for-supporting and adjusting the disk up and down with relationthereto, an arm carried the disk, another arm carried by :a movableportion of the crushing mill adapted to engage the disk arm and swing'itfrom side to side, springs by which the di'sksarm is returned to itsnormal position When released from the my hand in presence of twosubscribing Witactuatlng arm, sald actuatmg arm belng nesses.

so located as to be disengaged from the disk-carrying arm by theincrease of ore in THOMAS TOPP' 5 the crusher, and to be again engagedthere- \Nitnesses:

with by the decrease of supply. GEO. H. STRONG,

In testimony whereof I have hereunto set S. H. N OURSE.

